Sash holder and lock.



" No. 818,547. PATENTED APR. 24, 1906.

' A. J. M00031).

SASH HOLDER AND LOOK.

IIIIIIIIIIIIIIIII AR.27 ,1905.

UNTTED STATES PATENT @FFTCE.

SASH HOLDER AND LUCK.

Specification of Letters Patent.

latentecl April 24, 1906.

Application filed March 27,1905- .Serial No. 252,301.

To all who/1 it may concern.-

Be it known that 1, ANDREW J. MoConD, a citizen of the United States, residing at Chattanooga, in the county of Hamilton and State of Tennessee, have invented a new and. useful Sash Holder and Lock, of which the following is a specification.

The invention relates to sash holders and locks, and has for its object to provide a sim ple and inexpensive device of this class wherein security and convenience in operation are combined. 7

Further objects and advantages of this invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.

In the drawings, Figure 1 is a perspective view of a device embodying the invention applied in the operative position to a sash. Fig. 2 is a front view of the same, showing a portion of the window-frame in section. Fig. 3 is a similar view showing the lock in its inoperative position.

Similar reference characters indicate corresponding parts in all the figures of the drawings.

Cooperating with suitable seats or sockets 10 in the frame is a substantially T-shaped pivotal latch 11, constructed to be held by gravity with its nose 12 projecting into one of the sockets or seats, the extension 13, which constitutes the weight, also performing the function of a handle when it is desired to manually move the latch from one position to another. The nose 12 is provided with a cam-face 14 of gradual curve adapted when the latch is not otherwise restrained or locked to cooperate with the upper wall of the socket or seat in which it is arranged, whereby the latch may be swung to the inoperative position. (IndicatedinFig.3.) Cooperatingwith the latch and normally arranged in the path of movement of a stop-arm 15 thereof is a gravity-lock 16, which in the construction illustrated consists of a disk pivoted eccentrically to the sash by means of a screw 17 or the equivalent thereof and having a grip 18.

In its normal or locking position the shank or extension 13 of the latch is in contact with the surface of the frame by which its movement in one direction is limited, and when the latch is in use to hold the sash elevated, as when the sash is not provided with counterbalancing-weights, the lower side of the nose 12, which constitutes an abrupt shoulder, bears upon the lower wall of the notch or seat in which the nose is arranged. It will here be noted that the parts 12 and 13 constitute angularly-related substantially radial extensions, the part 12 to engage one of the sockets of the frame and the part 13 to engage the frame and prevent rotation of the latch in one direction. Movement of the latch in the other direction is normally prevented by the lock 16, which is arranged in the path ofmovement of the stop-arm 15. To release the sash, so that it may be raised, it is only necessary to rotate the lock 16 in the direction indicated in Fig. 3 and to a position where the pin 18 is level with or above the pivot 17, when the movement of the sash will swing the latch out of engagement with the notch and permit it to engage the next notch above or the one adjacent to the latch when the sash has reached the desired elevation. To lower the sash, it is necessary to hold the latch out of engaging position, or, in other words, in an elevated position. (Indicated in Fig. 3.) The extremity of the stop arm 15, however, is preferably shaped to form a cam-face 19, as indicated in the drawings, whereby if the lock 16 is moved to release the latch and the sash is raised sufliciently to swing the latch to the position indicated in Fig. 3 and. the lock then released. and. swung to the position indicated in Fig. 3 the latch will then be held in an elevated or inoperative position, or if the lock is swung outwardly a sufficient distance to move its long diameter to a position out of the line of movement of the arm 15 the elevation of the sash will swing the latch, and thereby move the lock until the cam-face 19 has passed beyond the center of the lock, when the latter will settle to the holding position. (Indicated in Fig. 3.) The latch will retain this position during the movement of the sash in either direction, and when the sash has reached the desired adjustment or has been lowered to its closed position a slight downward pressure on the extremity of the arm 13 will release the latch from the lock and allow the nose of the latter to engage the adjacent socket or seat. For the protection of the surface of the casing a face-plate or series of plates 20 may be employed.

It will be understood that the parts may be finished or ornamented in any desired style and may be attached to the casing without mutilation of the latter. The device also is simple and may be inexpensively manufactured.

Having thus described the invention, what is claimed. is

1. A look comprising a substantially T- shaped latch member having its head pivotally supported substantially midway of its ends, one end of the head constituting a catch for engagement with a keeper and the shank portion of the latch being disposed to lie against the keeper and prevent swinging of the latch in one direction, and means mounted independently of the latch and capable of being moved into engagement with the head of the latch to prevent rotation thereof in the opposite direction, and also capable of engaging the other side of the head to hold the latch when swung to a position at substantially right angles from its locked position.

2. A lock comprising a substantially T- shaped gravity-latch member having its head pivotally supported substantially midway between its ends, one end of the head constituting a catch for engagement with a latch, and an eccentrically-pivoted lockingdisk mounted above the latch and capable of being turned into engagement with the head of the latch opposite the catch end thereof, and also capable of being turned out of engagement with the head. and then returned into engagement with the opposite side of the head when the latch has been swung into a substantially horizontal position.

3. The combination with a window-casing provided with a socket, and a slidable sash, of a gravity-latch pivoted adjacent its upper end upon the sash and provided with a lateral catch extension for engagement with the socket of the frame, the lower portion of the latch being disposed to lie against the frame and prevent rotation of the latch in one direction when engaged with the socket, and an eccentrically-pivoted disk mounted upon the sash above the latch and capable of being turned into engagement with the top of the latter to lock the latch against rotation in the opposite direction, the disk capable of being turned out of engagement with the latch to permit releasing of the latter, and the back of the latch being provided with a seat into which the disk is capable of being turned to support the latch in a substantially horizontal position.

In testimony that I claim the foregoing as my own I have hereto afliXed my signature in the presence of two witnesses.

ANDREW J. MOCORD.

Witnesses:

NORMAN FARRELL, Sn, Ms. A. THoMAs. 

